(1.5 分)
It is best that ship's heading should be______ to the berth at the moment she contacts the wharf.
A.any angle B.small angle C.parallel D.vertical正确答案C
(1.5 分)
It is best that ship's heading should be______ to the berth at the moment she contacts the wharf.
A.any angle B.small angle C.parallel D.vertical正确答案C